As ISIS sweeps across Iraq and Syria and strikes fear in the heart of Westerners, many are baffled about who this group is, where they came from, and what connection they have to other Islamist jihadi groups. CNN Chief National Security Correspondent Jim Sciutto explains the similarities and differences between ISIS and al Qaeda.

Pres. Obama was slammed by critics after saying, "We don't have a strategy yet," on Syrian airstrikes. In an interview with Wolf Blitzer, White House press secretary Josh Earnest follows up and explains what the President was trying to say.

He was a normal American man from south Florida, but when video appeared of him blowing himself up for al Qaeda's affiliate in Syria, he shocked the world. Now, new video has surfaced of Moner Mohammad Abusalha, the American suicide bomber, and CNN's Tom Foreman explain what insight it gives us inside homegrown terrorists.

U.S. officials have identified a second man who may have been killed fighting along ISIS terrorists - and there has been a recent rise in the number of radicalized Americans heading overseas to fight for jihadist organizations. CNN's Brian Todd reports.

As Texas Governor Rick Perry and his legal team ask a judge to throw out a felony indictment alleging he abused his power, CNN is digging deeper into the charges against him - and finding a web of partisan politics, old grudges and a drunken driving arrest. CNN's Drew Griffin investigates.

In a speech before the American Legion, President Obama details how his administration will rectify shortfalls in caring for veterans - even as a new report slams the VA for its deadly wait lists. CNN's Jim Acosta reports.